Highly active and stable interface derived from Pt supported on Ni/Fe layered double oxides for HCHO oxidation

被引：69

作者：

Lin, Mengya ^{[1
,2
]}

Yu, Xiaolin ^{[1
]}

Yang, Xueqin ^{[1
,2
]}

Li, Kezhi ^{[4
]}

Ge, Maofa ^{[1
,2
,3
]}

Li, Junhua ^{[4
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China

[4] Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2017年 / 7卷 / 07期

基金：

中国国家自然科学基金;

关键词：

ROOM-TEMPERATURE; FORMALDEHYDE OXIDATION; DOUBLE HYDROXIDE; PLATINUM NANOPARTICLES; CATALYTIC-OXIDATION; AMBIENT-TEMPERATURE; REMOVAL; NI; SITES; CO;

D O I：

10.1039/c7cy00154a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The exploration of active interfaces has attracted wide attention, especially in the field of catalysis. In this work, Ni/Fe layered double oxide supported Pt nanoparticles (Pt/LDO.N)) were prepared using a hydrothermal and colloid-impregnation method. The Pt/LDO(N) catalyst exhibited remarkable long-term catalytic stability and activity for HCHO oxidation compared with Pt/Fe2O3 and Pt/NiO. The Pt species were well dispersed on the LDO support, and strongly interacted with Fe and Ni by forming an active Pt-Fe/Ni interface. O-2 dissociation could happen at the active interface by creating coordinatively unsaturated iron sites, further providing adequate O-/O-2 (-)species to take part in HCHO oxidation. The in situ DRIFTS results indicated that the dioxymethylene and formate species were the main reaction intermediates, which could be further oxidized into CO2 and H2O through the involvement of active oxygen.

引用

页码：1573 / 1580

页数：8

共 44 条

[1] Enhanced CO Oxidation Rates at the Interface of Mesoporous Oxides and Pt Nanoparticles [J].